符合標準EN55022 - B類標準意法半導體公司的EVLVIP17 - 5WCHG是5W開關電源（SMPS）設計，采用意法半導體公司的VIPER17HN，具有低待機功耗的特性，主要用作旅行電池充電器，如手機，掌上電腦和電子游戲的電池充電。充電器的(de)輸入(ru)電(dian)壓(ya)為90 - 264Vac，頻率45 - 66Hz，輸出電(dian)壓(ya)5.1伏直流± 2％，輸出電(dian)流1 ± 5％，電(dian)纜壓(ya)降補(bu)償(chang)（0.2V的(de)/甲(jia)），無負載在(zai)高火線電(dian)壓(ya)的(de)輸入(ru)功率低于100兆瓦，短(duan)(duan)路(lu)保護，并在(zai)短(duan)(duan)路(lu)故障消除后自動重起，印刷電(dian)路(lu)板尺寸為53 × 26毫米，安全特性和EN60065兼容，電(dian)磁干擾滿足標(biao)準(zhun)EN5022 - B類標(biao)準(zhun)。

     本文介紹了EVLVIP17 - 5WCHG主要特性，電路板外形圖以及詳細電路圖和所用材料清單（BOM）的。 EVLVIP17 - 5WCHG：5瓦的低待機功耗電池充電器演示板的基礎上VIPER17HN的EVLVIP17 - 5WCHG演示板是一個5瓦的作為，如移動電話，掌上電腦和電子游戲應用旅行使用開關電源。該(gai)委(wei)員會的(de)(de)(de)(de)目的(de)(de)(de)(de)是證(zheng)明(ming)該(gai)VIPER17HN離(li)線(xian)高電(dian)(dian)(dian)(dian)壓(ya)轉(zhuan)換器(qi)的(de)(de)(de)(de)性(xing)能(neng)(neng)。其低功耗和(he)(he)(he)其他(ta)特性(xing)，由于(yu)良好(hao)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)氣(qi)性(xing)能(neng)(neng)實現。為了獲得恒(heng)定(ding)的(de)(de)(de)(de)輸出電(dian)(dian)(dian)(dian)壓(ya)和(he)(he)(he)電(dian)(dian)(dian)(dian)流調節（簡歷(li)/消(xiao)委(wei)會），TSM1052簡歷(li)/消(xiao)委(wei)會控(kong)制器(qi)上使用的(de)(de)(de)(de)次要方面(mian)。這(zhe)(zhe)TSM1052是非常(chang)適合這(zhe)(zhe)種類型的(de)(de)(de)(de)應用，提(ti)供(gong)了一個(ge)非常(chang)小(xiao)的(de)(de)(de)(de)封裝(zhuang)非常(chang)低的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流消(xiao)耗（采用SOT23 - 6L）。該(gai)轉(zhuan)換器(qi)實現了一個(ge)反激拓(tuo)撲結(jie)構，這(zhe)(zhe)是理想的(de)(de)(de)(de)低功耗，低成本的(de)(de)(de)(de)隔離(li)轉(zhuan)換器(qi)。在小(xiao)學方面(mian)，VIPER17HN使用。該(gai)IC是毒蛇的(de)(de)(de)(de)+家族，從它(ta)的(de)(de)(de)(de)附(fu)加功能(neng)(neng)和(he)(he)(he)保護的(de)(de)(de)(de)利益。此(ci)設(she)備，設(she)計采用了一個(ge)多芯(xin)片(pian)方案，包括一個(ge)先(xian)進的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流模(mo)式(shi)(shi)PWM控(kong)制器(qi)和(he)(he)(he)雪(xue)崩(beng)的(de)(de)(de)(de)小(xiao)幅下(xia)降，7封裝(zhuang)堅固800 V的(de)(de)(de)(de)功率MOSFET。該(gai)轉(zhuan)換器(qi)在連續(xu)和(he)(he)(he)非連續(xu)導(dao)電(dian)(dian)(dian)(dian)模(mo)式(shi)(shi)工程取決于(yu)輸入電(dian)(dian)(dian)(dian)壓(ya)（電(dian)(dian)(dian)(dian)路有(you)一個(ge)范圍廣闊的(de)(de)(de)(de)輸入）和(he)(he)(he)輸出負載。

     該控制器(qi)(qi)后綴為“H”規定(ding)，開關頻(pin)率是115千赫，內部固定(ding)的(de)，允許的(de)功率元(yuan)件(jian)減少。應用(yong)程(cheng)序設計，以降低整體元(yuan)件(jian)數量(liang)和(he)適配器(qi)(qi)的(de)成本(ben)。輸(shu)入部分包(bao)括(kuo)一個浪涌電(dian)流(liu)限制和(he)故障保(bao)護，arectifier橋，兩條電(dian)解電(dian)容和(he)大量(liang)作為前電(dian)感熔(rong)斷電(dian)阻(zu)器(qi)(qi)高端(duan)AC - DC轉換(huan)器(qi)(qi)和(he)EMC濾波(bo)器(qi)(qi)。

    變(bian)壓(ya)(ya)器(qi)(qi)是(shi)一(yi)個層類型，利用(yong)一(yi)個標準的(de)(de)(de)(de)EF12.6鐵氧體(ti)磁芯，并(bing)與大約75 V電(dian)(dian)(dian)壓(ya)(ya)設計的(de)(de)(de)(de)反(fan)映。這個特點(dian)是(shi)變(bian)壓(ya)(ya)器(qi)(qi)繞組的(de)(de)(de)(de)技術，消除(chu)了(le)常用(yong)的(de)(de)(de)(de)?1安全電(dian)(dian)(dian)容器(qi)(qi)的(de)(de)(de)(de)需要之(zhi)間的(de)(de)(de)(de)主要和次要方面。一(yi)個RCD鉗位網絡用(yong)于漏感(gan)(gan)消磁。該(gai)電(dian)(dian)(dian)路的(de)(de)(de)(de)啟動是(shi)由內部管理(li)(li)，高(gao)壓(ya)(ya)的(de)(de)(de)(de)VIPER17HN啟動發(fa)電(dian)(dian)(dian)機。這條賽道的(de)(de)(de)(de)典型匯3電(dian)(dian)(dian)流從漏極引(yin)腳和收(shou)費內徑(jing)電(dian)(dian)(dian)容。這個電(dian)(dian)(dian)流值減少到(dao)0.6毫安在(zai)有保障的(de)(de)(de)(de)干預，以(yi)提高(gao)試用(yong)期重新啟動，從而減少對永久性故障的(de)(de)(de)(de)情況下(xia)，功率器(qi)(qi)件(jian)的(de)(de)(de)(de)壓(ya)(ya)力。為(wei)VIPER17HN電(dian)(dian)(dian)源獲得自(zi)我(wo)供(gong)應從一(yi)激配置連接(jie)的(de)(de)(de)(de)變(bian)壓(ya)(ya)器(qi)(qi)繞組。該(gai)電(dian)(dian)(dian)路提供(gong)電(dian)(dian)(dian)壓(ya)(ya)，理(li)(li)想情況下(xia)，直接(jie)成比例的(de)(de)(de)(de)輸出(chu)電(dian)(dian)(dian)壓(ya)(ya)。在(zai)實(shi)踐中，因為(wei)這是(shi)沒(mei)有Y型帽(mao)變(bian)壓(ya)(ya)器(qi)(qi)有很高(gao)的(de)(de)(de)(de)漏感(gan)(gan)，作為(wei)峰值初級電(dian)(dian)(dian)流增大selfsupply電(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)增加。無論如何，由于廣泛內徑(jing)的(de)(de)(de)(de)VIPER17HN電(dian)(dian)(dian)壓(ya)(ya)范圍的(de)(de)(de)(de)情況（從8.5 V至23五）正確的(de)(de)(de)(de)供(gong)應總是(shi)提供(gong)。內部MOSFET的(de)(de)(de)(de)電(dian)(dian)(dian)流限制降低（從0.4的(de)(de)(de)(de)面值）通過使用(yong)電(dian)(dian)(dian)阻R16連接(jie)到(dao)續(xu)針。

     有(you)(you)(you)了(le)這(zhe)個功能，IDlim定(ding)為(wei)280毫(hao)安，允許使(shi)用(yong)(yong)(yong)小型變壓(ya)(ya)器5 W輸(shu)出(chu)（EF12.6使(shi)用(yong)(yong)(yong)）在(zai)(zai)不(bu)飽(bao)和的(de)(de)(de)風險。分(fen)壓(ya)(ya)器的(de)(de)(de)節電(dian)(dian)(dian)(dian)(dian)沒有(you)(you)(you)安裝（所(suo)以禁用(yong)(yong)(yong)此(ci)功能），以節省電(dian)(dian)(dian)(dian)(dian)能特別是空載功耗。該VIPER17HN有(you)(you)(you)幾個內(nei)置的(de)(de)(de)功能，如抖動(dong)，以減少電(dian)(dian)(dian)(dian)(dian)磁干擾的(de)(de)(de)問(wen)題，軟啟動(dong)頻率，和突發的(de)(de)(de)低(di)功耗模(mo)式(shi)工(gong)作在(zai)(zai)輕(qing)負(fu)載和無負(fu)載條件(jian)下。過流(liu)(liu)，過載和過溫(wen)保(bao)護也是在(zai)(zai)內(nei)部實施，并保(bao)證董事(shi)會(hui)的(de)(de)(de)安全運(yun)行。在(zai)(zai)中(zhong)學方面，TSM1052恒壓(ya)(ya)恒電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)（CV / CC）的(de)(de)(de)控(kong)制器使(shi)用(yong)(yong)(yong)。在(zai)(zai)TSM1052和光電(dian)(dian)(dian)(dian)(dian)二極管(guan)的(de)(de)(de)光電(dian)(dian)(dian)(dian)(dian)耦合器是直接(jie)供應的(de)(de)(de)輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。其電(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)TSM1052（為(wei)1.7 V分(fen)鐘）電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)范(fan)圍(wei)內(nei)進行精確(que)的(de)(de)(de)恒定(ding)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)調(diao)節，即使(shi)輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)降至1.5伏特，1.6五，此(ci)范(fan)圍(wei)通常(chang)為(wei)所(suo)有(you)(you)(you)電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)器應用(yong)(yong)(yong)不(bu)夠。當輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)低(di)于這(zhe)一限制電(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)監(jian)管(guan)，屬(shu)于損失(shi)，保(bao)護了(le)口(kou)腔扁(bian)平苔蘚調(diao)用(yong)(yong)(yong)和系統(tong)始于呃(e)逆模(mo)式(shi)下工(gong)作。如果由于某種原(yuan)因，目前監(jian)管(guan)的(de)(de)(de)需(xu)要到(dao)零(ling)輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)水平（即短路），它是足夠提(ti)供TSM1052和帶有(you)(you)(you)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)等于輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)總和，從TR1C電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)二極管(guan)纏繞在(zai)(zai)前進的(de)(de)(de)方式(shi)糾正。有(you)(you)(you)關這(zhe)一具體原(yuan)理圖，請(qing)使(shi)用(yong)(yong)(yong)TSM1052見應用(yong)(yong)(yong)筆記AN2448（超小型電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)器更多信息(xi)）。

     R7的(de)電(dian)(dian)阻器被(bei)添加到提(ti)供電(dian)(dian)纜(lan)(lan)壓(ya)降補償。較高(gao)的(de)輸(shu)(shu)出(chu)電(dian)(dian)流(liu)，輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)越高(gao)，對(dui)電(dian)(dian)路板的(de)輸(shu)(shu)出(chu)端測(ce)量。這(zhe)樣，對(dui)電(dian)(dian)纜(lan)(lan)連(lian)接的(de)單位負載(zai)(zai)電(dian)(dian)壓(ya)降得(de)到補償，同時提(ti)供給負載(zai)(zai)的(de)電(dian)(dian)壓(ya)基(ji)本(ben)不(bu)變。更多的(de)細節，因(yin)為(wei)(wei)r7同樣等于九號(hao)，輸(shu)(shu)出(chu)電(dian)(dian)壓(ya)為(wei)(wei)增加0.2毫安的(de)輸(shu)(shu)出(chu)電(dian)(dian)流(liu)壓(ya)。這(zhe)一數(shu)額的(de)基(ji)礎上選(xuan)擇為(wei)(wei)這(zhe)些應用程序（通常約為(wei)(wei)0.2-0.3Ω）典(dian)型(xing)的(de)電(dian)(dian)纜(lan)(lan)電(dian)(dian)阻。